Winding Ohmmeters
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Product
Tap Changer Analyzers & Winding Ohmmeters
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Winding resistance test of inductive test objects, such as power transformers, is one of the most effective non-intrusive ways of checking its condition. Due to their advanced design, DV Power winding resistance meters provide high test currents (up to 100 A DC) and high accuracy (up to 0.1%) within light and portable test instruments. In addition to winding resistance measurement, it is also possible to perform simple, quick and reliable transformer on-load tap changer condition assessment by recording the test current during tap changer operation, also known as DVtest. Because of that, problems with a tap changer connection, contacts, and switching procedure can be detected.DV Power winding ohmmeters consist of single-phase RMO-T and three-phase TWA series. Models from the TWA series are designed for six-winding resistance measurement of power and distribution transformers, with only one single-step cable setup. As a result of reducing the total test time, it enables significant saving of time and money.Typical application areas of these instruments are high-voltage substations and industrial environments. They are intended to measure the resistance of:Transformer windingsOn-load tap changersGeneratorsElectrical motorsHigh-current bus bar jointsCable splicesWelding joints
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Product
Transformer Winding Resistance Meters
RMO TT Series
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The Tap Changer Analyzer & Winding Ohmmeter of the RMO-TT series is designed for winding resistance measurement of inductive objects, and for a tap changer analysis. The RMO-TT series is based on the state of the art technology, using the most advanced switch mode technology available today. The RMO-TT instruments are accurate (0,1%), powerful (up to 100 A) and still portable. The Instruments generate a true DC ripple free current with automatically regulated measurement and discharging circuit. RMO-TT instruments can perform a simple, quick and reliable transformer on-load tap changer condition assessment. This series of instruments enable measurements of a winding resistance in every tap position, current ripple values (percentage of a current drop during a tap change) and transition times during the tap changes. Problems with a connection, contacts, and selector/diverter switch operation (tap change with interruption) can be detected with these measurements.
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Product
Motor Winding Ohmmeter
RMO-M Series
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The motor/generator winding resistance test is used to identify open windings, shorts between two windings, short to grounds, connection mistakes or shorted turns. This non-invasive test of winding resistance helps to pinpoint problems regarding windings in stator or rotor part of an electrical machine. Additionally, motor winding ohmmeter has the capability of performing heat run test which will show a change in windings resistance with an increase of temperature.The RMO-M series is designed as an ideal aid in preventive maintenance of electrical motors and generators. They are powerful (up to 100A of test current), portable (8 kg) and generate DC current which is completely ripple-free. This makes measurement very precise with 0,1% accuracy.Three voltage channels make measurement very easy since it is possible to obtain a value of all three winding resistances in one measurement
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Product
Micro - Ohmmeter / Milli - Ohmmeter
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Basic Accuracy 0.25%Max. Test Current : 5A (120mV) for 7002Max. Test Current : 10A (60mV) for 7272Manual or Auto RangeFour Terminal Kelvin Measurement6 Ranges with 1mV Best ResolutionMeasurement of Resistive and Inductive MaterialsSetting for HI, LO & PASS ReadingsMemory of 3000 Measurements DataProgrammable HI-LO Alarm with memory of 20 DataLarge LCD with Backlight & HOLD FunctionLow Power ConsumptionBattery Operated with AC AdaptorLow Battery (Voltage) AlarmLED indication for Invalid Resistance MeasurementCable Length Measurement in feet & metersUser Interface Software for PC Communication via RS232C(to USB Bridge) cableBuilt-inBatery Chaging Circuit & Calender Clock
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Product
Bench-Mounted Ohmmeters
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The range of our bench-mounted ohmmeters are ideally suited for laboratory testing of samples and production line testing.
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Product
Ohmmeter
PDRM-10A
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The PDRM-10 A ohmmeter, with a range of 0.01µΩ to 200 Ω is currently the most accurate and highest resolution ohmmeter on the market, and at only 860 g it is also the lightest and most compact. All this has made it the standard low resistance ohmmeter in many electrical companies, industries and assembly companies. It has a resolution of 0.01µΩ.
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Product
Ohmmeter
PDRM-1A
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The PDRM-1A ohmmeter is very accurate for measuring low resistances. You can measure values from 1µΩ to 200Ω. For this reason, it allows a wide variety of measurements to be made with a single instrument.
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Product
Ohmmeters
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GAOTek provides state of the art, professional grade Ohmmeters for sale to the United States, Canada and Globally. GAOTek Ohmmeters are portable instruments that accurately measure electrical resistance between two points on a circuit. The Ohmmeters have their own power supply through their own battery, and are needed when the two probes (red: positive side of circuit, black: negative side of circuit) are connected to the two points in the circuit where the desired measurement is to take place. The circuit is turned off, which is when the ohmmeter sends its own current through the circuit. Units of Ohms, symbolized by the Greek letter Ω (Omega), are used as a unit of measure when measuring electrical resistance. In accordance with Ohm’s law, when the current is passing through a circuit is at its maximum, the resistance is said to be the smallest.
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Product
Winding Resistance Meter
TRM 50+
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SCOPE introduces 50 A state of the art precision winding resistance meter, specially designed for field testing as well as factory testing of large transformers up to 500 MVA. Winding resistance value of transformer and rotating machine are directly displayed on 5.7” TFT display. TRM 50 is designed to work in live EHV switchyard conditions, ensuring operator’s safety and repeatability of results. Maintenance time saving is ensured by one time connection to transformer with simultaneous resistance measurement of three / six windings, measurement of resistances of all taps with automated tap change and demagnetization facility. The meter is protected against the back-EMF offered by large inductive windings.
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Product
Wind Power Solution
EVO ACCIONA
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The EVO ACCIONA is custom-made with firmware and fixtures designed specifically for Acciona turbines. These precisely designed fixtures make generator-to-gearbox alignment easy inside any nacelle – safeguarding reliability and optimizing the energy efficiency of the wind turbine.
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Product
Wind Power Solution
ECO VESTAS
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These precisely designed fixtures make generator-to-gearbox alignment easy inside any nacelle – safeguarding reliability and optimizing the energy efficiency of the wind turbine.
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Product
Live-Line Micro Ohmmeter
Ohmstik Plus
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The Ohmstik Live-Line Micro Ohmmeter measures the micro-ohm resistance of conductors, connectors, splices and switching devices positioned directly on an energized, high voltage lines. This measurement is much more direct than infrared thermography, and is not subject to emissivity, weather, current loading, background, and other influences that cause infrared errors.
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Product
Winding Resistance Meter
TRM 25
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SCOPE introduces 25 A state of the art precision winding resistance meter, specially designed for field testing as well as factory testing of large transformers up to 500 MVA. Winding resistance value of transformer and rotating machine are directly displayed on 5.7” TFT display. TRM 25 is designed to work in live EHV switchyard conditions, ensuring operator’s safety and repeatability of results. Maintenance time saving is ensured by one time connection to transformer with simultaneous resistance measurement of three / six windings, measurement of resistances of all taps with automated tap change and demagnetization facility. The meter is protected against the back-EMF offered by large inductive windings.
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Product
Wind Meters
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According to the type of application, wind meters are made as hot wire wind-meters or pocket weather wind-meters, all of these wind-meters can measure air velocity and air pressure. Wind meters for the measurement of air velocity and air pressure. The measurement results can be stored in memory of the device (depending on the model). There are a lot of different instruments available in our stores. These wind meters are ideal for taking quick or constant measurements. Wind meters for measuring air velocity and volume flow are available here. The pocket-sized wind meters are implemented as hot-wire wind meters, vane wind meters, cup wind meters or portable, waterproof wind meters depending on the particular application.
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Product
Compliance Voltage Ohmmeter
ΩhmRanger-LCV
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ΩhmRanger-LCV is an accurate, 3.5 Digit, Low Compliance Voltage Ohmmeter. It is able to measure from >100M to 10 Ohms, ΩhmRanger-LCV is suitable for professionals and enthusiasts alike.
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Product
Wind Sensors
FT702
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The current version of the FT702 is Version 22. Its strength and dependability have made it particularly popular for wind turbine control. It is used globally by the world's leading wind turbine manufacturers, as well as in a range of meteorology applications.
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Product
IMPULSE SURGE WINDING TESTER
VE2882A-5U
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Impulse Tester can detect turn & layer short ,the differences in the number of turns and the material of the core. If high impulse voltage is applied, the poor insulation will appear as a corona or layer discharge.
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Product
Wind River Linux
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For more than 15 years Wind River Linux has been the industry’s most advanced embedded Linux platform, with a comprehensive suite of products, tools, and lifecycle services to build and support intelligent edge solutions.
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Product
Wind Measurement and Meteorological System
Moriah
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Aeronautical & General Instruments Ltd.
MWS is a solid-state system with no moving parts, so providing a highly accurate, reliable and low cost of ownership system, which is ideal for supporting ship based aviation activities. The system comprises of 1 to 5 Solid State Wind Sensors, Dual Redundant Processor Unit, a range of Multi-Function Color Displays (8.4”, 10.4” and 15.0”) and utility Software/Graphic User Interfaces. In addition full Meteorological capability can be achieved with the inclusion of Air Temperature & Humidity, Air Pressure and Sea Temperature Sensors.
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Product
Winding Resistance Test
20A DC booster
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The 20A DC STCS booster allows to perform resistance tests on a PT with a current up to 20 A DC. The option is used together with STS 5000 and STS 4000 and must be connected to STCS module.
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Product
Wind Meter Base Model
Kestrel 1000
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The Kestrel 1000 Wind Meter is the base model in our extensive assortment of Kestrel pocket weather meters. Simple and compact, the Kestrel 1000 fits right into the palm of your hand and weighs a mere 65 grams. It's also extremely durable and totally waterproof, allowing you to measure wind speeds in even the harshest weather conditions. It even floats.
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Product
Wind Direction Sensor
ENVIROMUX-EWDS
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Balanced wind direction vane with a near-zero friction bearing and a high accuracy magnetic angle sensor to provide precision wind direction. Sensor range: full 360 degrees , zero deadband. Accuracy: ±1.8 degrees. Resolution: 12 bit or 0.025 degrees. Directional Vane approximately 8 inches (203 millimeters). 3 wire flying leads, 25-feet (7.6-meter). Supply voltage: 4.5 to 5.5 VDC. Current: 15 mA typical. Output: 5 to 95% of input voltage (0.25 to 4.75VDC). Requires the ENVIROMUX-S5VDC-5V to operate with ENVIROMUX-2D/5D/16D. Maximum cable length: 1000 ft (305m)
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Product
Transformer Winding Resistance Meter
10A
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*10A DC continuous current in 4 ranges of 0.01A, 0.1A, 1A and 10A.*4 ½ digit display for higher resolution.*Dual channel measurement.*Suitable for operation in energized switchyard conditions.*Specialized protection circuits for suppression of inductive voltage kickback.*SMPS based - lightweight and portable.
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Product
Low Resistance Ohmmeters
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Some times know as Ducter testers, these are highly accurate, easy to operate instruments that measure resistance with resolution as fine as 0.1 micro-ohm. Digital micro-ohmeters and DLROs measure contact resistance of switch and circuit breakers, aircraft frame bonds, and rail and pipeline bonds just to name a few of the applications. Megger has models available for testing using test currents from 0.5 mA to 200 amps covering a multitude of applications that require precise low-resistance measurements.
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Product
Winding Resistance Meter
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* Selectable four resistance ranges.* 4 1/2 digits LED display* High measurement Current (10A)* True four Technique elimanates lead resistance errors Systems* Fully protected against overloads* Proven design* Computer connectivity through RS 232
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Product
Offshore Wind Farm Testing Equipment
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Potential readings taken by a diver holding a BathyCorrometer in contact with submerged steel structures can be analysed by engineers to determine whether the cathodic protection systems are working effectively or whether remedial action is required.
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Product
Transformer Winding Resistance Meters
RMO TD Series
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The RMO-TD Series On-Load Tap & Winding Resistance Analyzer is designed for the measurement of winding resistance of inductive elements, and for tap changer analysis. The RMO-TD series is based on the latest technology, using the most advanced switching technology available today. The RMO-TD series is accurate (0.1%), powerful (up to 60 A) and lightweight. It generates true, ripple-free DC current with automatic metering control and a discharge circuit.
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Product
Wind Sensors
FT742
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The FT742 measures wind speeds up to 75 m/s. Its innovative design incorporates a series of “turbulators” which condition the air flow to deliver our highest levels of accuracy yet. Available in four mounting options, the Flat Front (FF) and Pipe Mount (PM) are typically used in wind turbine control and the Direct Mount (DM) in meteorological applications. The Surface Mount (SM) has been specifically designed for OEM integration and for use on UAVs/drones.
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Product
Bobbin Winding Coil Turns Tester
SS108A series
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Bobbin winding coil testers are used to test various coil of turns. Such as: generator winding turns, transformer winding turns, motor winding turns, inductor winding turns, contactor winding turns, relay winding turns, sparking winding turns, ignition winding turns, speaker voice coil, etc.
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Product
Transformer Winding Resistance Meters
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Vanguard Instruments Company, Inc.
The TRM-40 is Vanguard Instruments’ third generation transformer winding resistance meter. The TRM-40 is designed specifically to measure DC resistance values of transformer windings, rotating machine windings, or any dc resistance of an inductive device.
